Safety-lock for self-dumping mine-cages.



w. J. PHBLAN SAFETY LOCK FOR SELF DUMPING MINE GAGES.

APPLICATION FILED APR.12, 1913.

1,085,297. I Patented Jan.27,1914.

3 SEEETB-SHEET 1.

I u i l I l l I W. J. PHBLAN, SAFETY LOCK FOR SELF DUMPING MINE GAGES APPLICATION FILED APR. 12, 1313.

1,985,297. Patented Jan.27, 1914.

3 SHEETS-SHEET 2.

. 14% amoemtoz gg w Zwffffiela 22, X 3% am W. J. PHELAN. SAFETY LOOK FOR. SELF DUMPING MINE GAGES. APPLICATION FILED APR. 12, 1913.

1,085,297, I Patented Jan. 27, 1914 3 SHEETS-SHEET 3,

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, guides and. thereby spilling and endangert rail ran srairns "earner @hi ifihl WILLIAM J. PHELAN. OF NEW? SALEM, PENNSYLVANIA.

SAFETY-LOCK FOR SELF-DUMPING MINE-CAGES.

To all Q0/1011), '1' t may concern Be it known that I, \VlLLL-UE J. lnnmx. a citizen of the United Staies'and resident of New Salem, in the county of l' ayette and State of Pennsylvania, have invented certain new and useful Improvements in Safhty-Lochs for Self-Dumping Mine-( anes. of which the following is a specification.

My invention relates to the class of selfdumping mine cages in which, when hoisted to the top of the mine shaft in which the are erected, the mine cages are automatically caused to tilt or dump in order to discharge materials loaded in mine cars positioned on Specification of Letters Patent.

Patented Jan. 27, 1 914.

Application filed April 12, 1913. Serial No. 760,734.

; dumping or; tilting of the mine cage plat form is prevented, and by having novl 5' means whereby the safety lock is actuated 1 the mine shaft.

the cage platforms, and the invention more particularly relates to the construction. and arrangement of a self-dumpmp; mine cage of the mine cage is locked in hoisting posi tion and the possibility of premature tipping or dumping of the cage platform is prevented and overcome.

Heretofore, with self-dumping" mine cagesof the class to Which this invention relates, the tilting platform of thedumping' cage is normally prevented from turning or tilting during the hoisting operations by means of guiding shoes attached to and forming! a part of the mine cage, the shoes engaging with the wooden guides extendingvertically from the bottom to the top, and for some distance above the top of the shaft, on opposite ends of the mine shaft. With such constructions, should the shaft guides, which ordinarily are made of Wood, become broken, the guiding shoes become inoperative and in this Way occasion great liability of the cage-platfbrm dumping or tilting during the hoisting oilowering operations, upon reaching a broken point in the length of the'shaft ingithe freight being carriedon the platform of tliecage, whether men or material.

One object of my invention is to provide a hoisting cage having novel means whereby dumping or tilting of the mine cage platform daring the.=hoisting and lowering operations is prevented in all positions of the cage inthe mine shaft, except such as those at which tipping means are provided for mechanically dumping the mine cage platrem, vand the possibility of accident is avoided and overcome.

Another objectof this invention is to pro- ?ide a safety lock for mine-cages whereby A still further object of the invention is to provide a mine hoist having improved means whereby the cage platform is act-u aled is caused to tilt or dump at the desired points in the mine shaft.

Still further objects of my invention will appear hereinafter as the invention is more fully described and claimed.

Referring lo the drawings. forming part of this specification, Figure 1 is a plan show- Ming a mine shaft having a tilting hoisting having novel means whereby the platform.%

cage operatively mounted therein and con structed and arranged in accordance with my invention. Fig. 9 1s a side elevation of the hoisting cagz'e showing? the tilting cage ance with this invention.

tional plan on a l l l l crations.

v ion the construction and arrangement of the locking pins and connecting; mechanism 1 forming part of this invention by which the mine case platform 1s locked or secured in ;hoisting position duringthe cage hoisting operations. Fig. 5 1s a similar side elevation showing" the meanswhereby the lockingz' pins are actuated to role cage upon reaching its dumping JWlil'llll or above the top or mouth of the ase the mine position 5 mine sha ft.

In the accompanying drawings, the numeral 2 designates .a mine shaft having Vertically extending wooden guides 33. 3, positioned on opposite sides of the shaft, which extend from top to bottom of the mine shaft, and by which the tipping mine cage platform is maintained in hoisting position withto the bottom of the posts or veer-- pass through the tical members 4, t, of the main frame is a cage platform 7 having vertical posts or side members 8, 8, connected at their upper ends by a horizontal bar or shaft 9, and mounted on the ends of the shaft S) are flanged guide wheels 10, 10. The upper surface of the tilting platform 7 is provided with track rails 11, 11, and with openings or slots 12, 12, in the bottom thereof for the wheels 13 of mine cars 14. The ends of the mine cars 14 have tilting doors 15 hinged at their upper edges to the sides of the mine cars. and a latch to retain the doors in closed position until released, the lower ends of the doors being arranged when released, to swing outwardly and permit materials loaded in the mine cars 14 to be dumped or discharged therefrom when the platform T is inclined or in dumping position, or that shown in dotted lines in Fig. 2 of the drawings.

Located at the top of the mine shaft 2 on The shafts 24 and 25 are mounted i hearings 24, 25", and extend transversely acr iss the top of the cross beam 5 of the platform frame, and levers .27 and .28 are keyed to the ends thereof. The lower ends of the levers 27 and 28 are pivoted to one end of sliding links or rods 29 and 30, the opposite ends of these links being pivotally connected to the shoes 31 and and the shoes 31 and are also pivotally connected by pins 33 to the upper ends of the uprights or posts 8. 8,

- on the frame forming part of the tilting each side thereofl in position to be engaged by'the guide wheels 10, 10, on the ends of the shaft 0, which is secured to the upper ends of the upright members forming a track and the continuity of the p 8. S. of the tilting platform 7. are curved guides 1G. 1G,-

vertical shaft guides 3 is interrupted by gaps I or openings 17 so to clear the guiding shoes 18 which are connected by the curved arms 19 to the vertical members of the' tilt- 5 ing platform 7 and permit the track formed bv the'curved guides 16 to engage with the 1 guide rollers 9, and by engagement withthese rollers cause the platform 7 to tilt or dump uponweaching the top of the mine} shaft. The guide shoes 18 are arranged to l when the cage platform 7 is moving into its tilting or dumping position. ano m ining; mturned to its horizontal position, 1, the

. be 'innin of the ca e lowering o ieration.

P 11 f l Fastened to the cross beam 5 on the upper portionof the platform frame are brackets 90 in which the horizontal locking pins 21 are mounted and arranged to move axiallv or lengtlnvise. so that the free ends of the pins 31 when advanced will engage with the side membersor posts 9. 9. of the gaps 17in the guides 3' platform frame and by engagement therewith lock the tilting platform 7 in its horizontal or hoisting position. The inner ends of the locking pins Bl are connected to levers 22 and 3-3 which are keved or otherwise rigidly secured on the shafts 2t and ;\t an internietliate point in its length the lever 2 is keyed or otherwise fastened to the sl'iaft and the upper end of the lever 23 a is con'm-eted hr :1 link 26 to the lower swi gf ing end of the lever 22 so as to PIOVldG 21. 1

means which'will insure the pinsll. traveling in unison and the same relative distance ovhen being advanced and withdrawn or moved into or out of loeltingpt; sition,

platform 6.

The adjacent overlapping ends of the links or rods 29 and 30 have collars 0r shoulders 34 thereon and the reduced overlapping ends of these rods project. through an opening in the bracket which is secured to the top of the platform 7. The ends of the helical springs 36 on the rods 29 and 30 ings 20 and maintain the free ends of these.

pins in locking engagement with the uprights 8, 8. so that the platform 7 cannot tilt with respect to the posts l. l. of-the frame. of the hoist while the pins 21 are in this position.

The guides 37 are provided with curved shoe engaging faces 38 so that when the cage reaches the upper end of the shaft 2 the shoes 55.1, 32, will engage the curved faces 37 and he moved connecting mechanism, causethe pins 21 to retract or move inwardly so as'to disengage the platform 7 from the fram? and permit the curved track 16, by engagement with the guide wheels 10. to movethe tilting platform 7 from the position shown in full lines into that shown in dotted lines in Fig. .2. while inwardly, and, through the the cage platform is being lifted sufficiently to move the guide wheels 1.0 from the,posi-' tion shown in full lines in Fig. 2 into that shown by dotted lines in this figure.

The track rails 11, 11.. on the platform 7 of the mine cage are cut away so as to prothe platform 7 so the-mine car wheels will rest upon the portions of the track rails projecting upwardly withii the recesses 19, 12.

The operation of my lmproved apparatus wow: i. i

tents. After tilting the platform the move '18, 18, with the vertical guides 3, 3.

gaps 17 interrupting the continuity of the is as follows: The hoisting cage is lifted in the usual manner and during the lifting operations, tilting of the platform 7 is prevented by engagement of the guiding shoes During the hoisting movement of the mine cage the lock operating shoes 31 and 32 are extended in the position shown in Fig. 4 b the helical springs 36, 36, and, when in this position the locking pins 21, 21, which are operatively connected with the shoes 31 and 32 are held in locking position by the action of the springs so as to fasten the tilting platform 7 against tilting movement. l henknt the top of the shaft, as the cage plajfofin reaches the position relative to the, curved guides 16 shown in full lines in Fig. 2, the tilting wheels 10, 10, engage with the uides 16 and further lifting movement of tie mine cage causes the platform 7 to be tilted into the position shown in dotted lines in Fig. 2. The

guides 3 at the top of the shaft 2 permit the guiding shoes 18 to move transversely from oneside to the other of the guides 3, and, as the guide wheels 10 approach the lower end of the curved guide tracks 16 the operating shoes 31 and 32 for the locking pins 21 are caused to be operatively engaged by the curved surfaces 38 of the guides 37, 37, and by such engagement the shoes 31 and 32 are caused to move toward each other so as to compress the springs 36, 36. W hen the shoes 31, 32 are moved inwardly in this manner the levers 27 and 28, shafts 24 and 25, and the links 22 and 23 retract or move the locking pins 21 inwardly so as to release the platform 7 and permit the free dumping movement of the platform 7 and the mine car 14 thereon, by the curved guide track 16. As the mine cage starts upward from the bottom of the mine shaft the face of the platform 7 is' moved toward the bottom of the mine, car; 14: and the mine car wheels 13 enter the openings or recesses 12 in the platform 7 so that the mine car 15 is in this way secured in position on the platform and will not slide forwardly thereon later when at the top of the mine shaft the platform .is tilted to empty the mine car 15 of its conment is reversed and the cage again lowered into themine shaft 2. At the beginning of such reverse or lowering movement the curved guides 16, by engaging the guide wheels 10, 10, cause the cage platform 7 to first assume its horizontal position, and further downward movement of the cage removes the shoes 2-31 and :32 from engagement with the curved faces 38 ot the guides :37 so I that the springs 36 are nd, and, through the medium of t mechanism, operate to a pins 21 into position to 10 platl'orm in horizontal position on-thc frame tions.

The advantages of my invention will be apparent to those skilled in the art. The provision of the locking pins prevents accidental tipping or tilting of the cage platform in case of breakage or other accident to the guides which would render the guide shoe inoperative and the possibility of spilling the load on the cage into the shaft is dyercome and prevented. The locking pins are automatically caused to move into and outT -of locking position as the mine cage reaches and moves away from the dumping position of the cage.

Modifications in the construction and arrangementof the parts may be made without departing from my invention as defined in the appended claims.

I claim-:-

1. A dumping mine cage comprising a cage frame, a dumping platform pivoted thereto, and locking means on the said frame engaging with hand fastening the platform 95 in hoisting position thereon during the cag hoisting operations and unlocking means (JP-v eratively connected with said locking means, said locking means being arranged to be disengaged when the mine cage reaches its dumping position in each hoisting operatio 2. A dumping mine cage comprising a cage frame, a dumping platform pivoted thereto, and locking means on the said frame engaging with and fastening the platform in hoisting position thereon during the cage hoisting operations, said locking means comprising locking pins slid-ably mounted on the cage frame. helical springs to extend the pins into locking engagement with the diunping platform, and shoes pivotally mounted on the cage. frame and operatively connected to the locking pins to retract. the pins and permit. tilting the dumping platform at predetermined positions in the lifting movement of the mine cage.

A dumping mine cage comprising in (-on'ihination a cage frame, a dumping platform pivoted thereto, locking pins slidably mounted on the platform arranged to engage the cage frame and lock the platform in hoisting position thereon during the hoisting operations, pivoted shoes for actuating the locking pins to release the platform, and means arranged to engage said shoes to move the pins into disengaged position at the end of each cage hoisting operation.

i. In a self-dumping mine cage, the com- :hanically dmrping said platform, means connected to the platform engaging with the cage guides to prevent dumping of the platform in the mine shaft, a lock connected to said frame and arranged to fasten the 1 platform thereto during the hoisting operations, and means mnlmdying pivoted shoes operatively connected with said lock for releasing said look When the cage reaches its dumping position.

5. In a self-dumping mine cage, the comhination with a hoisting cage frame having a dumping platform pivotally mounted thereon and means for normally preventing dmnping of the platform during the hoist ingpperations, of locking means on the cage frame whereby the platform is fastened to the frail e and dumping thereof thereby prevented during the hoisting operations. and means embodying pivoted shoes opcratively connected with the locking means, and cooperating means positioned at the top ofthe mine shaft for mechanically releasing the 1 ,'osa,297

frame whereby the platform is fastened to the frame and dumping thereof prevented during the hoisting operations, andmeans embodying pivoted members operatively connected with the locking .means for releasing the locking means at predetermined positions in the lifting movement of the mine cage.

7. In a self-dumping mine cage, the combination with a hoisting cage f'ame having a dumping platform pivotally mounted thereon and means for normally preventing dumping of the platform during the hoistin'g operations, of locking means on the icage frame whereby the platform is ta locking means and dmnping said platform.

(t. In a self-dumping mine cage, the comhmation with a hoisting cage-frame having a dumping platform pivotall mounted thereon and 'means for normally preventing damping of the platforn'i during the hoistmg operations, of locking a cane on the cage tened to the frame and damping thereof prevented dnring the hoisting operations, saidv locking means comprising locking pins slidably mounted on the cage frame. helical springs to extend the pins into locking e|1- gagement with the dumping platform, and shoes pivotally mounted on the cage frame and operatively connected to the locking pins to retract the pins and permit tilting the dumping platform at predctm'mined positions in the lifting movement of the mine cage.

Signed by me at Uniontown. Pa. this 2:.

i day of March 1913.

WILLIAM J. PHELAN.

Witnesses:

llannr \V. BY 1: x 1a, J. P. Pnnnm.

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